1 files changed, 183 insertions, 0 deletions
diff --git a/deps/openssl/openssl/test/ossl_shim/async_bio.cc b/deps/openssl/openssl/test/ossl_shim/async_bio.cc
new file mode 100644
index 0000000000..cbbabe01ea
--- /dev/null
+++ b/deps/openssl/openssl/test/ossl_shim/async_bio.cc
@@ -0,0 +1,183 @@
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include "async_bio.h"
+
+#include <errno.h>
+#include <string.h>
+
+#include <openssl/bio.h>
+#include <openssl/crypto.h>
+
+
+namespace {
+
+struct AsyncBio {
+  bool datagram;
+  bool enforce_write_quota;
+  size_t read_quota;
+  size_t write_quota;
+};
+
+AsyncBio *GetData(BIO *bio) {
+  return (AsyncBio *)BIO_get_data(bio);
+}
+
+static int AsyncWrite(BIO *bio, const char *in, int inl) {
+  AsyncBio *a = GetData(bio);
+  if (a == NULL || BIO_next(bio) == NULL) {
+    return 0;
+  }
+
+  if (!a->enforce_write_quota) {
+    return BIO_write(BIO_next(bio), in, inl);
+  }
+
+  BIO_clear_retry_flags(bio);
+
+  if (a->write_quota == 0) {
+    BIO_set_retry_write(bio);
+    errno = EAGAIN;
+    return -1;
+  }
+
+  if (!a->datagram && (size_t)inl > a->write_quota) {
+    inl = a->write_quota;
+  }
+  int ret = BIO_write(BIO_next(bio), in, inl);
+  if (ret <= 0) {
+    BIO_copy_next_retry(bio);
+  } else {
+    a->write_quota -= (a->datagram ? 1 : ret);
+  }
+  return ret;
+}
+
+static int AsyncRead(BIO *bio, char *out, int outl) {
+  AsyncBio *a = GetData(bio);
+  if (a == NULL || BIO_next(bio) == NULL) {
+    return 0;
+  }
+
+  BIO_clear_retry_flags(bio);
+
+  if (a->read_quota == 0) {
+    BIO_set_retry_read(bio);
+    errno = EAGAIN;
+    return -1;
+  }
+
+  if (!a->datagram && (size_t)outl > a->read_quota) {
+    outl = a->read_quota;
+  }
+  int ret = BIO_read(BIO_next(bio), out, outl);
+  if (ret <= 0) {
+    BIO_copy_next_retry(bio);
+  } else {
+    a->read_quota -= (a->datagram ? 1 : ret);
+  }
+  return ret;
+}
+
+static long AsyncCtrl(BIO *bio, int cmd, long num, void *ptr) {
+  if (BIO_next(bio) == NULL) {
+    return 0;
+  }
+  BIO_clear_retry_flags(bio);
+  int ret = BIO_ctrl(BIO_next(bio), cmd, num, ptr);
+  BIO_copy_next_retry(bio);
+  return ret;
+}
+
+static int AsyncNew(BIO *bio) {
+  AsyncBio *a = (AsyncBio *)OPENSSL_malloc(sizeof(*a));
+  if (a == NULL) {
+    return 0;
+  }
+  memset(a, 0, sizeof(*a));
+  a->enforce_write_quota = true;
+  BIO_set_init(bio, 1);
+  BIO_set_data(bio, a);
+  return 1;
+}
+
+static int AsyncFree(BIO *bio) {
+  if (bio == NULL) {
+    return 0;
+  }
+
+  OPENSSL_free(BIO_get_data(bio));
+  BIO_set_data(bio, NULL);
+  BIO_set_init(bio, 0);
+  return 1;
+}
+
+static long AsyncCallbackCtrl(BIO *bio, int cmd, BIO_info_cb fp)
+{
+  if (BIO_next(bio) == NULL)
+    return 0;
+  return BIO_callback_ctrl(BIO_next(bio), cmd, fp);
+}
+
+static BIO_METHOD *g_async_bio_method = NULL;
+
+static const BIO_METHOD *AsyncMethod(void)
+{
+  if (g_async_bio_method == NULL) {
+    g_async_bio_method = BIO_meth_new(BIO_TYPE_FILTER, "async bio");
+    if (   g_async_bio_method == NULL
+        || !BIO_meth_set_write(g_async_bio_method, AsyncWrite)
+        || !BIO_meth_set_read(g_async_bio_method, AsyncRead)
+        || !BIO_meth_set_ctrl(g_async_bio_method, AsyncCtrl)
+        || !BIO_meth_set_create(g_async_bio_method, AsyncNew)
+        || !BIO_meth_set_destroy(g_async_bio_method, AsyncFree)
+        || !BIO_meth_set_callback_ctrl(g_async_bio_method, AsyncCallbackCtrl))
+    return NULL;
+  }
+  return g_async_bio_method;
+}
+
+}  // namespace
+
+bssl::UniquePtr<BIO> AsyncBioCreate() {
+  return bssl::UniquePtr<BIO>(BIO_new(AsyncMethod()));
+}
+
+bssl::UniquePtr<BIO> AsyncBioCreateDatagram() {
+  bssl::UniquePtr<BIO> ret(BIO_new(AsyncMethod()));
+  if (!ret) {
+    return nullptr;
+  }
+  GetData(ret.get())->datagram = true;
+  return ret;
+}
+
+void AsyncBioAllowRead(BIO *bio, size_t count) {
+  AsyncBio *a = GetData(bio);
+  if (a == NULL) {
+    return;
+  }
+  a->read_quota += count;
+}
+
+void AsyncBioAllowWrite(BIO *bio, size_t count) {
+  AsyncBio *a = GetData(bio);
+  if (a == NULL) {
+    return;
+  }
+  a->write_quota += count;
+}
+
+void AsyncBioEnforceWriteQuota(BIO *bio, bool enforce) {
+  AsyncBio *a = GetData(bio);
+  if (a == NULL) {
+    return;
+  }
+  a->enforce_write_quota = enforce;
+}